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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import QtQuick
import QtQuick.Controls
import "../"
Item {
id:container
width:320
height:480
Column {
spacing:5
anchors.fill: parent
anchors.topMargin: 12
Label {
font.pointSize: 24
font.bold: true
text: "Quadratic Curve"
anchors.horizontalCenter: parent.horizontalCenter
color: "#777"
}
Canvas {
id: canvas
width: 320
height: 280
property color strokeStyle: Qt.darker(fillStyle, 1.3)
property color fillStyle: "#14aaff" // blue
property int lineWidth: lineWidthCtrl.value
property bool fill: true
property bool stroke: true
property real alpha: 1.0
property real scale : scaleCtrl.value
property real rotate : rotateCtrl.value
antialiasing: true
onLineWidthChanged:requestPaint();
onFillChanged:requestPaint();
onStrokeChanged:requestPaint();
onScaleChanged:requestPaint();
onRotateChanged:requestPaint();
onPaint: {
var ctx = canvas.getContext('2d');
var originX = 75
var originY = 75
ctx.save();
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.translate(originX, originX);
ctx.strokeStyle = canvas.strokeStyle;
ctx.fillStyle = canvas.fillStyle;
ctx.lineWidth = canvas.lineWidth;
ctx.translate(originX, originY)
ctx.rotate(canvas.rotate);
ctx.scale(canvas.scale, canvas.scale);
ctx.translate(-originX, -originY)
// ![0]
ctx.beginPath();
ctx.moveTo(75,25);
ctx.quadraticCurveTo(25,25,25,62.5);
ctx.quadraticCurveTo(25,100,50,100);
ctx.quadraticCurveTo(50,120,30,125);
ctx.quadraticCurveTo(60,120,65,100);
ctx.quadraticCurveTo(125,100,125,62.5);
ctx.quadraticCurveTo(125,25,75,25);
ctx.closePath();
// ![0]
if (canvas.fill)
ctx.fill();
if (canvas.stroke)
ctx.stroke();
// ![1]
ctx.fillStyle = "white";
ctx.font = "bold 17px sans-serif";
ctx.fillText("Qt Quick", 40, 70);
// ![1]
ctx.restore();
}
}
}
Column {
anchors.bottom: parent.bottom
anchors.bottomMargin: 12
LabeledSlider {id:lineWidthCtrl; min:1; max:10; init:2; name: "Outline"; width: container.width}
LabeledSlider {id:scaleCtrl; min:0.1; max:10; init:1; name: "Scale"; width: container.width}
LabeledSlider {id:rotateCtrl; min:0; max:Math.PI*2; init:0; name: "Rotate"; width: container.width}
}
}
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